30124-77 Rev. 1.2 | 24MAR2020
Page 3
Installation
3.2 Flow Direction
It is very important to install the ow meter relative to the ow of the water. The sensor must face the ow direction in order
for it to make proper measurements. (Figure 1)
3.3 Pipe Run Requirements
Flow meters are velocity sensing devices and are vulnerable to
certain upstream disturbances. Because of this, meters need
certain lengths of straight pipe before and after the meter. These
distances relate to the diameter of the pipe used. Obstructions
can include elbows, valves, pumps, and changes in pipe diameter.
The uneven ow created by these obstructions can vary with
each system.
Both upstream and downstream distances are measured from
the center of the saddle as shown below. In a typical installation
to achieve ±2% accuracy the McMag2000 ow meter should be
installed a minimum of ve diameters upstream from most ow
disturbers and two diameters downstream of the meter. (Figure 1)
Figure 1. Pipe Run Requirements
The McMag2000 is a saddle type meter. It may be installed
directly onto an existing pipe. Follow these steps for a new ow
meter installation.
1. Cut or hole-saw a round hole minimum 3” in diameter in
the pipe and remove all burrs, slag, and rough edges from
the inside and outside of the cutout section.
2. Loosen and remove the nuts and washers from the straps.
Remove the straps from the saddle.
3. Apply lubrication to the gasket and inner diameter of
U-bolts with MolyKote lubricant or equivalent.
4. Place saddle with gasket in place over the cut out.
5. Place U-bolts underneath the pipe and through the saddle clips.
6. Place the provided washers and nuts on the U-bolts that have been installed through the saddle clips.
7. Start tightening down the nuts evenly in a gure 8 pattern.
7a. Tighten the nuts to 40 ft. lbs. evenly using a gure 8 pattern.
7b. Tighten the nuts to 60 ft. lbs. evenly using a gure 8 pattern.
7c. Tighten the nuts to 80 fts. lbs. evenly using a gure 8 pattern.
8. Go back around and loosen all of the nuts. Do not back the nuts completely o of the U-bolts. The goal is to release
force and tension o of the saddle and the gasket.
9. Repeat steps 7a through 7c exactly as described. Any step that is skipped may result in an improper seal.
10. Apply pressure/turn on pump.
11. Verify the saddle is not leaking water. If it is, repeat steps 8 through 10 until the saddle has sealed.
3.4 Basic Installation Steps
!WARNING!
Insure that the line is depressurized
before beginning installation!
Flow Direction
2D
Downstream
5D
Upstream
NOTE
The Mc Mag2000 should not be connected to
any earth ground. Connecting to an earth
ground may adversely aect meter performance.
